Magnesite Ross N L American Mineralogist 82 (1997) 682-688 The equation of state and high-pressure behaviour of magnesite Sample: at P = 2.26 GPa _database_code_amcsd 0001906 4.6149 4.6149 14.867 90 90 120 R-3c atom x y z Biso Mg 0 0 0 .30 C 0 0 .25 .17 O .2800 0 .25 .38